private function draw(x:Number, y: Number, w:Number, h: Number):UIComponent {
      var aBox:Shape = new Shape();
      var c:UIComponent = new UIComponent();
      
      aBox.graphics.lineStyle(lineWidth_ns.value, line_cp.selectedColor);
      aBox.graphics.beginFill(fill_cp.selectedColor, 1);
     
      aBox.graphics.drawRect(x, y, w, h);
      aBox.graphics.endFill();
      c.addChild(aBox);
      canvas.addChild(c);
      return c;
     }